Method and apparatus for forming holes

ABSTRACT

An apparatus, system, or method for forming holes and shapes in surfaces may be disclosed. The apparatus may be a drain or drain-shaped tool which may be affixed to a drilling device. The apparatus may be fitted with an abrasive material, sharp edges, or a serrated edge to increase the performance and efficiency of the apparatus. The system and method may incorporate the use of a drilling device, such as a handheld drill or a drill press. A first step may involve affixing a drain to a drilling device. In a next step, the user may contact the drain drilling device with a work surface and may power on the drilling device. The hole created may be recessed such that the surrounding area is incrementally deeper closer to the hole in the center.

FIELD OF INVENTION

A method, system, and apparatus for forming holes and shapes in surfaces is disclosed.

BACKGROUND

Forming large holes and shapes with conventional equipment typically requires high speed computer numeric control (CNC) machines which may require multiple different drill heads to accomplish the task. Cutting holes and shapes with a plurality of axes, such as a three-dimensional shape, often requires multiple cutting attachments.

These additional attachments complicate the task and increase the time required to complete the task, thus increasing costs. Large holes and shapes might also take a considerable amount of time to form using a CNC machine. Further, the high working speed of a typical CNC machine limits the size of the forming heads and tooling. Since the energy of a rotating part is a function of its moment of inertia around the axis of rotation, and the moment of inertia increases as the square of the radius of the part, a slightly larger forming head can mean a substantially larger energy requirement, which can overtax the machinery and present greater safety risks.

Many prefabricated parts in which holes are intended to be cut are formed from polymeric foam, such as polyurethane foam or polystyrene foam. In many cases, it is suitable to make cuts or other alterations to these foam structures by cutting the foam with a heated wire which is formed to the cross section of the desired shape. There are a number of problems with this method when forming holes. First, the waste part of the hole being formed needs space so that it can be removed and will not interfere with the cutting process. Since gravity will pull the loose waste piece down and the heating process can deform the foam, the loose waste piece will interfere with the cutting operation. The waste section gets recut, gums up the wire causing the heating aspect to be uneven, resulting in poor quality hole formation. Second, the shape of the hole to be formed may be of such complexity that a wire cannot be bent into the desired shape and still maintain the ability to form an evenly shaped hole while in operation. Third, the shape of the desired hole combined with the varying density and dampness of the foam causes the wire to have hot/cool spots causing uneven and poor hole formation. Fourth, the size of the desired hole can be too large for the wire to be able to maintain its desired shape during the hole formation process.

SUMMARY

In an exemplary embodiment, an apparatus for forming a hole or a shape in a surface, such as a polymeric foam shower base or shower tray or any other suitable surface, may be disclosed. According to an exemplary embodiment, a drilling device or other forming apparatus, such as an overhead drill press, a fixed overhead drill, an inverted drill press, or a handheld device, may be provided with a forming tool affixed to the bottom portion of the drilling device on the end of the drilling device which contacts the surface. In an exemplary embodiment, the forming tool may be equipped with one or more cutting or finishing surfaces, such as cutting teeth or abrasive surfaces, which may facilitate hole formation.

In another exemplary embodiment, a method for forming a hole or a shape in a surface may be disclosed. In a first step, a drain may be affixed to a piece of drilling equipment, which may be provided with one or more cutting or finishing surfaces, such as cutting teeth or abrasive surfaces. In some exemplary embodiments, the drain may be a standard drain and may be provided with an abrasive surface; for example, in a first exemplary embodiment, an abrasive may be applied to the drain surface directly via an adhesive, while in a second exemplary embodiment, a sandpaper attachment may be applied to the drain surface, and in a third exemplary embodiment, a cutting tool may be coupled to the drain. Other variants may also be contemplated. In a next step, the user may contact a work surface to be cut (or material otherwise to be formed) with the end portion of the drill on which the drain is provided. Finally, the drill (or other forming apparatus) is powered, such that the abrasive surface or cutting surface applied to the drain is applied to the material to be formed, causing the force of the spinning of the drain as well as a force applied toward the material to be formed to cut the material to be formed in an even, round shape.

BRIEF DESCRIPTION OF THE FIGURES

Advantages of embodiments of the present invention will be apparent from the following detailed description of the exemplary embodiments thereof, which description should be considered in conjunction with the accompanying drawings in which like numerals indicate like elements, in which:

FIG. 1 is an exemplary embodiment of a method of forming holes.

FIG. 2 is an exemplary embodiment of a hole forming apparatus.

FIG. 3a is an exemplary embodiment of a hole forming apparatus affixed to a drill press.

FIG. 3b is an exemplary embodiment of a hole forming apparatus affixed to a hand drill.

FIG. 4A is an exemplary embodiment of a hole forming apparatus fitted with an abrasive material.

FIG. 4B is an exemplary embodiment of a hole forming apparatus fitted with teeth.

FIG. 5 is an exemplary embodiment of a hole formed by a hole forming apparatus.

DETAILED DESCRIPTION

Aspects of the invention are disclosed in the following description and related drawings directed to specific embodiments of the invention. Alternate embodiments may be devised without departing from the spirit or the scope of the invention. Additionally, well-known elements of exemplary embodiments of the invention will not be described in detail or will be omitted so as not to obscure the relevant details of the invention. Further, to facilitate an understanding of the description discussion of several terms used herein follows.

As used herein, the word “exemplary” means “serving as an example, instance or illustration.” The embodiments described herein are not limiting, but rather are exemplary only. It should be understood that the described embodiments are not necessarily to be construed as preferred or advantageous over other embodiments. Moreover, the terms “embodiments of the invention”, “embodiments” or “invention” do not require that all embodiments of the invention include the discussed feature, advantage or mode of operation.

A method and apparatus for forming holes and shapes in surfaces may be disclosed. In an exemplary embodiment, such a method may operate at slower speeds, allowing the use of larger diameter forming devices without the hazards of high-speed equipment.

In an exemplary embodiment, a forming apparatus may be disclosed. In an exemplary embodiment of a forming apparatus, a drain, such as a standard off-the-shelf drain, may be affixed to a drilling device or other forming device, such as a fixed overhead drill, overhead drill press, inverted drill press, or a hand-held drill device. In some exemplary embodiments, the drain may be, for example, a standard PVC floor drain such as might be installed in the base of a shower, with said drain being of a type available in a typical hardware store. (Numerous custom variations on this part may also be contemplated.) In an exemplary embodiment, the drain may be affixed to a drill bit, hole saw bit, or any other contemplated drill attachment through the use of an adhesive, such as epoxy. Other methods of affixing the drain to the drill, such as by a fastener, may also be contemplated.

According to an exemplary embodiment, various combinations between forming devices and attachment methods may be contemplated. For example, the use of a low speed drill press, as opposed to a CNC machine which operates at a high speed, may allow a common and conventional epoxy adhesive to be used, even if the same epoxy adhesive may not hold at the high speeds of a CNC machine. Further, the use of a low speed drill press may allow for a larger tool to be fastened, since a large tool may be unstable at high speeds. Other fastening mechanisms may be more suitable for higher-speed devices and may be employed in combination with them, such as may be desired. In certain exemplary embodiments, the drain may form the body of the forming apparatus, though in other exemplary embodiments a formed tool may be used.

A variety of different drains may be chosen, depending on the application. In an exemplary embodiment, any manufacturer's drain may be used in order to create a hole for that specific drain. This may allow the device to be adapted such that any number of differing drains may be used, allowing the device to be well-suited to an application in which drain sizes and shapes may change over time and may differ between manufacturers. A user may prefer and utilize a certain type of drain which they are accustomed to. For example, while (as noted above) a standard PVC floor drain may be suitable in some circumstances, it may be contemplated that some applications will require drains of different sizes, shapes, or materials, including existing standard drains or custom drains specifically intended for a particular application.

The drain may be affixed to the drill in a number of ways. In an exemplary embodiment, it may be contemplated that the structure of the drain may form the outer flange of the tool, with the center of the drain being hollowed out such that a hole cutter may replace the center of the drain. It may alternatively be contemplated to have the center of the drain be used in place of a hole cutter, and with this structure being further sharpened or serrated to increase cutting efficiency.

The use of a standard drain allows the forming apparatus to be accessible in places where a CNC machine would not, allowing easy production of finished workpieces. For example, the contemplated technique may be particularly suitable to impoverished or developing countries (or rural areas) which may not have ready access to higher-end heavy machinery, but which may have access to some form of drilling equipment and a drain piece to be used. Small businesses who might not have the resources to obtain a CNC machine may easily source a drain from a local hardware store. The drain may be significantly less expensive than comparable hole forming devices. Furthermore, cutting a hole without the use of specific hole-cutting tools may result in an uneven hole with proportions that cannot conform to the shape of the desired application, such as a standard drain. By using a drain as the body of the forming apparatus, it may be assured that the hole created by the apparatus can support a standard drain.

The hole forming apparatus may be applied to any firm material. In an exemplary embodiment, the work surface may be a material such as foam, wood, or plastic. It may be contemplated that the hole forming apparatus may form the hole in a foam or plastic mold of a tub or a shower drain (or another structure such as a pattern used to form the mold), and then a hardening material such as acrylic or fiberglass may be poured into the mold to create the tub or shower.

In a further exemplary embodiment, it may be contemplated to use a variant of the hole forming apparatus to form holes in harder materials, such as wood. In an exemplary embodiment of such a hole forming apparatus, the flanges may be constructed from steel and may be brazed, electroplated, stamped, or machined to a cutting surface. The steel flanges may also have an abrasive material affixed to the outer surface. Steel flanges may be capable of directly shaping an already molded tub or shower.

Various exemplary alterations to the standard drain may be contemplated in order to increase the efficiency and accuracy of the hole forming. For example, in a first exemplary embodiment, angled sharp edges may be cut into the drain at the bottommost surfaces to create a sharper, more precise cut. The sharp edges may more precisely pierce the work surface. Further, planes which are parallel to the work surface could be cut into an angle, such that they are no longer parallel to the work surface but rather may contain an edge that may pierce the work surface. Certain portions of the drain may be cut into a saw-tooth shape. The teeth of the saw-tooth shaped drain pieces may pierce into the work surface as well as grab or saw off portions of the surface, further supplementing the cutting power of the apparatus. These alterations made to the drain allow the hole forming apparatus to be customizable and adaptable to a large variety of applications.

In another embodiment, a formed tool in the shape of a drain may be used instead to form the body of the forming apparatus. While in some exemplary embodiments it may be contemplated for a drain to have a cylindrical shape that requires a simple, straight hole to be formed, other holes may be constructed with additional protuberances or depressions to create a unique shape that would not be possible to create with a standard drain. In an exemplary embodiment, the formed tool may be a hole saw, drill, or reamer with an additional flange component affixed to a top portion of the formed tool. Various assemblies of the formed tool may be contemplated, such as a combination of an existing drain and a hole saw, a combination of an altered existing drain with a hole saw, a hole saw with other added elements duplicating a manufactured drain, a hole saw with integral elements duplicating a manufactured drain, or any other suitable assembly of parts. The goal of the formed tool may be to produce a hole that may receive a specifically shaped or sized drain or device.

The additional flange affixed to the formed tool may be formed from wood (such as plywood), plastic, metal, or any other rigid or semirigid material, and may further be fitted with an abrasive material. (As noted, the additional flange may be integral with the hole saw or other cutting device, if desired. Alternatively, it may be desired to have the additional flange be removable, which may allow the drain used as the base of the device to be used to check the drain fit in the final formed holes, such as may be desired.) The bottom portion of the formed tool may be a large drill bit or hole saw, depending on the application. Further, the bottom portion may also be another material, such as wood or another such material as is described above, that may be shaped to create a hole of a specific shape.

In a further embodiment, the apparatus may be fitted with an abrasive along the surface to increase friction and cutting speed. The attached abrasive may be applied in a variety of ways, such as by welding, an adhesive, or by using a premanufactured abrasive material, such as sandpaper. For example, in a first exemplary embodiment, a standard drain may be dipped in adhesive and then dipped in abrasive to apply the abrasive, while in a second exemplary embodiment the abrasive may be welded to the substrate. In an exemplary embodiment, a thick bodied epoxy adhesive may be applied to the drain. The thick body epoxy may hold the abrasive material without running down the sloped surface of the drain flange. In another embodiment, the drain may be dipped in a liquid adhesive. Other variants are also contemplated, such as sonic attachment. An abrasive may increase cutting speed and precision while also reducing cracks and splints in the work surface.

In certain exemplary embodiments, various grades of abrasive may be used, alone or in combination. The use of abrasive, in general, may create a smoother hole. In various exemplary embodiments, an abrasive or combination of abrasives may be used in order to provide a desired smoothness while achieving a desired hole forming speed. A smoother hole may provide advantages such as increased flow, improved aesthetics, and safety, though in some circumstances a degree of roughness may be desired in order to improve an adhesive connection between the drain flange and the foam.

The forming apparatus may be fitted to a drilling device, which may, for example, be a drilling device with a significant amount of clearance under the cutting head for large sheets of foam. (In an exemplary embodiment, this may be a ceiling-mounted drill press, such as a standard portable overhead drill press mounted to the ceiling instead of the floor by its base. Other variations may also be contemplated; for example, a hand-held drill may alternatively be used, or a drill press may simply be modified.) The drilling device may be pressed into the work surface, or the work surface may be raised to meet the forming apparatus by means of a rising table or similar devices.

Referring now to exemplary FIG. 7, in a further embodiment, a dust collection system may be contemplated to collect the waste material that has been removed from the work surface. A closed dust collection system may be powered and include a suction device. The dust collection system may include a hose 702 or multiple hoses directed at the work surface to receive the waste material. The hose 702 may be connected to an aperture at the rear of the dust collection system. A shield like device may be fitted to the dust collection system to ensure that the waste material is directed into the dust collection system. The shield may be one piece or may contain multiple removable sections. Sections may be removed from the shield depending on the size and shape of the work surface and forming apparatus. The shield may have a cover in the front, open end. The cover may be held in place during operation by a hinge, magnets, or by any other means of attachment.

According to an exemplary embodiment, it may also be contemplated to heat a forming tool to a greater degree than may be accomplished through friction of the tool against the workpiece, in order to improve the ability of the forming tool to cut foam. As such, in some exemplary embodiments, the forming tool may include a mechanical heater or other heater. (Various exemplary embodiments of a forming tool heater may be contemplated. For example, in an exemplary embodiment, the shaft of a forming tool may be held by a bearing so as to be rotatable with respect to the flange and hole saw structure, and may transfer torque to the flange and hole saw structure via an imperfect connection such as a magnetic torque coupler or rotary dashpot, such that additional heat is also produced. In another exemplary embodiment, a cavity in the forming tool may be filled with a material with a high thermal mass and heated ahead of time. Chemical and electrical solutions may also be contemplated, such as a battery-powered electric heater, if desired.) Referring to exemplary FIG. 1, a method for forming holes and shapes in surfaces may be shown. In a first step, a drain may be affixed to a drilling device 102. A drain may be an off-the-shelf drain from a hardware store or may be a specifically formed tool that is formed specifically for cutting holes. The drain may be affixed to the drill in a number of ways, such as by welding, application of adhesive, or mechanical attachment. In another exemplary optional step, an abrasive material may be applied to the drain 104. The abrasive material may be adhered to the device by first applying an adhesive, and then subsequently applying an abrasive material that may be bonded to the device via the adhesive. The abrasive may also be welded or sanded onto the device. In a next step, the drain drilling device and the work surface may be brought into contact 106. The drain drilling device may be lowered onto the work surface or the work surface may be raised to meet the drain. In a final step, the drilling device may be activated and driven into the work surface 108. In an exemplary embodiment, the drilling device may be configured to operate at a lower speed so as to not cause damage to the drilling device, material to be formed, or endanger the operator.

Referring now to exemplary FIG. 2, a hole forming apparatus may be disclosed. The hole forming apparatus 200 may be a drain or a similarly shaped tool. In an exemplary embodiment, the hole forming apparatus 200 may incorporate a cutting edge 202. The cutting edge 202 may be the surface which initially contacts the work surface. In a further embodiment, the cutting edge 202 may be sharpened to a point or angled so as to decrease the surface area of the point of contact and may increase the cutting efficiency of the apparatus. The apparatus may contain an upper flange 203. The upper flange 203 may not require a sharp edge, however, it may still contact the surface to create grooves and angles as depicted in FIG. 5. The underside of upper portion 203 may incorporate an abrasive which may smooth or level the work surface to an appropriate height or angle, as shown in exemplary FIG. 6. The apparatus may be affixed to a drilling device in the center of the apparatus 204. The center of the upper portion 204 of the apparatus may be directly bolted, welded, or otherwise affixed to a member of a drilling device 206. A pilot bit or centering bit 209 may be affixed to the center of the lower portion. The pilot bit 209 may ensure that the hole formed from the apparatus is accurate by reducing any lateral movement of the apparatus on the work surface.

Referring now to exemplary FIG. 3A and 3B, a hole forming apparatus may be affixed to a number of drilling devices. The exemplary embodiment in FIG. 3A may illustrate a hole forming apparatus 200 affixed to a drill press. In this exemplary embodiment, the head of the drill press 206 may be lowered into the cutting surface 208 via a lever 210. In another contemplated embodiment, the cutting surface 208 may be raised to meet the hole forming apparatus 200. Referring now to exemplary FIG. 3B, a hole forming apparatus attached to a handheld drilling device may be illustrated. Further, the handheld drilling device may be any rotary device, such as a grinder. In an exemplary embodiment, a handheld drilling device 212 may have a hole forming apparatus 200 attached. The hole forming apparatus 200 may be removably attached via the drill head 206. The hole forming apparatus may be attached or removed in a manner similar to changing drill bits, as is commonly known in the field. The hole forming apparatus 200 as illustrated in FIG. 3B may be used in applications where a drill press would be inconvenient or impossible. The handheld drill 212 may be brought to a fixed work surface, whereas a drill press may require that the work surface be movable.

Referring now to exemplary FIG. 4A and 4B, additional embodiments of a hole forming apparatus may be illustrated. FIG. 4A may disclose a hole forming apparatus 200 which may be covered in an abrasive material 400. The abrasive material 400 may be adhered to the hole forming apparatus 200 in a variety of ways, such as by welding, sanding, or using an adhesive. The abrasive material 400 may be applied to the apparatus as a whole, or selectively applied to portions of the apparatus which contact the work surface, such as on and around the cutting edge 202.

Exemplary FIG. 4B may illustrate a further embodiment of a hole forming apparatus. In this exemplary embodiment, the cutting edge 202 may be shaped to be in a serrated configuration 402. The serrated or saw-tooth configuration may be accomplished by cutting notches into the hole forming apparatus or drain 200 along the cutting edge 202. The serrated edge 402 may be further sharpened or angled. The serrated edge 402 may increase cutting efficiency by puncturing the outer edge of the cutting surface, allowing the rest of the apparatus to follow through with greater ease. A serrated edge 402 may be sharper and might not become dull as quick as un-serrated edges. In an exemplary embodiment, it may be contemplated that the serrated edge 402 may be incorporated on a device which may also apply the abrasive material 400 as depicted in FIG. 4A. The teeth of the serrated edge 402 may be spaced closely or scarcely, depending on the level of precision and strength required for the application.

Now referring to exemplary FIG. 5, an exemplary work surface and hole as may be formed by the hole forming apparatus may be shown. The work surface 208 may be a variety of materials or shapes. Furthermore, the work surface 208 may not need to be a movable piece as shown in FIG. 5, but rather may be a fixed portion of a floor, wall, or ceiling. The hole forming apparatus may initially contact the work surface at the center of hole 500. A centering bit may be used to ensure that a steady and precise hole 500 is cut. After the centering bit has punctured the surface, the hole forming apparatus may contact the work surface along the edges of hole 500. Hole 500 may be the basis of the drain and may be hollowed by the hole forming apparatus such that a pipe may be fitted to the hole 500. Surrounding the hole 500 may be a number of surfaces of varying depth at a plurality of axes. For example, surface 502 may surround hole 500 and might not be hollowed but may be reduced in height or angled towards hole 500. Surface 502 may be surrounded by an additional surface 504 which may be of yet another height, preferably higher than the surface 502 but still lower than the outside surface of the work surface 208. The varying depths may subsequently deepen as the distance from the hole decreases, which may create a path for any liquid to follow the shape of the drain to be used. In an exemplary embodiment, the outer surfaces 502 and 504 might not be grooved but may instead be conically angled such that the height along the circumference of the outside surface 504 is larger than the height along the circumference of the hole 500. A hole forming apparatus as depicted in FIG. 2-4 may be contemplated such that the drain or tool is angled or grooved in a manner capable of forming the hole and surface illustrated in FIG. 5.

Referring now to exemplary FIG. 6, a side view showing the underside of a hole forming device may be illustrated. The underside of the flange 203 may be ridged. The ridge areas may be split into multiple segments of varying heights or depths. In exemplary FIG. 6, two areas may be shown, area 205 and area 207. In this exemplary embodiment, area 205 may be deeper than area 207. The ridged areas may be formed by the drain that is used to create the body of the hole forming apparatus. The areas may be ridged or may smoothly connect to one another such that they create a straight, angled surface. The drain may be originally fitted with the ridged areas, or they may be installed by the user. Finally, the ridged areas may be covered in an abrasive material, such as sandpaper, such that when the ridged areas make contact with the work surface they may wear down the work surface into a shape that neatly fits a drain with the same or similar ridged areas. The exemplary embodiment shown in FIG. 6 contains two ridged areas, but any number of ridged areas may be contemplated, including zero.

Referring now to exemplary FIG. 7, a dust collection system may be shown and described. The dust collection system may have a rounded body 702 which may mimic the round body of a large drain. The rounded body may be substantially closed with the exception of a few apertures. The rear aperture may be sized to appropriately receive a vacuum hose 704. This aperture may be sealed such that the vacuum hose is flush with the body 702. The front aperture 706 may be located on the opposite side of the rear aperture 704. The front aperture may be configured to receive the body the hole forming device. The hole forming tool device may slide into or under the dust collection system. The drill press or drill may be connected from the top of the hole forming device and may enter the dust collection system at top aperture 708. The top aperture may be sized slightly larger than the head of the drill such that a minimum amount of air or dust can escape from the dust collection system. The dust collection system may incorporate an open bottom portion so that the hole forming device may contact the work surface through the open bottom portion. The shield may be one piece or may contain multiple removable sections, depending on the size and shape of the work surface and forming apparatus. The shield may have a cover in the front, open end. The cover may be held in place during operation by a hinge, magnets, or by any other means of attachment.

The foregoing description and accompanying figures illustrate the principles, preferred embodiments and modes of operation of the invention. However, the invention should not be construed as being limited to the particular embodiments discussed above. Additional variations of the embodiments discussed above will be appreciated by those skilled in the art.

Therefore, the above-described embodiments should be regarded as illustrative rather than restrictive. Accordingly, it should be appreciated that variations to those embodiments can be made by those skilled in the art without departing from the scope of the invention as defined by the following claims. 

What is claimed is:
 1. A method for forming holes and shapes in surfaces, comprising: affixing a forming apparatus to a rotary tool, said forming apparatus comprising a cylindrical outer edge and a hole defined within the cylindrical outer edge; applying an adhesive material to an outside portion of the forming apparatus; forming an abrasive layer on the outside portion of the forming apparatus, wherein forming the abrasive layer comprises applying an abrasive material to the adhesive material; pressing the forming apparatus to a work surface at a specified location; and forming a hole in the work surface in the shape of the forming apparatus, wherein forming the hole comprises activating the rotary tool and, after activating the rotary tool, applying pressure to the work surface with the forming apparatus.
 2. The method of claim 1, wherein the forming apparatus is a drain.
 3. The method of claim 1, wherein the abrasive layer is one of the set of: grit material directly adhered to the adhesive material, and sandpaper having a backing adhered to the adhesive material.
 4. The method of claim 1, wherein forming the hole comprises raising the work surface to meet the rotary tool prior to applying pressure to the work surface.
 5. The method of claim 1, wherein the rotary tool is one of a handheld drill, drill press, or angle grinder.
 6. The method of claim 1, wherein the rotary tool is operated at a speed in the range between 200 rotations per minute to 900 rotations per minute.
 7. A hole forming apparatus for forming holes or shapes in surfaces, comprising: a rotary device with a rotating shaft; a forming tool fixedly mounted on the rotating shaft of the rotary device, said forming apparatus comprising a cylindrical outer edge and a hole defined within the cylindrical outer edge, wherein the cylindrical outer edge of the forming tool comprises a cutting edge and an outside surface; and an abrasive affixed to an outside portion of the forming tool.
 8. The hole forming apparatus of claim 7, further comprising a dust collection system surrounding the rotary device configured to deflect or contain material displaced by the forming tool.
 9. The hole forming apparatus of claim 8, further comprising a vacuum tube connected to the dust collection system, said vacuum tube having an orifice disposed under the forming tool and configured to collect dust particles displaced by the operation of the forming tool.
 10. The hole forming apparatus of claim 7, wherein the forming tool further comprises an abrasive lip disposed on an upper end of the forming tool proximate the rotating shaft, the abrasive lip configured to create a recessed hole in a work piece.
 11. The hole forming apparatus of claim 7, wherein the rotary device further comprises a centering bit disposed on the rotating shaft of the rotary device and disposed within the cylindrical outer edge, a bottom portion of said centering bit extending past a bottom portion of the cylindrical outer edge of the forming apparatus.
 12. The hole forming apparatus of claim 7, wherein the forming tool is a drain.
 13. The hole forming apparatus of claim 7, wherein the cutting edge is a serrated edge.
 14. The hole forming apparatus of claim 7, wherein the forming tool further comprises a heating element configured to provide heat to the forming tool in addition to heat provided by a cutting operation of the forming tool.
 15. The hole forming apparatus of claim 7, wherein the forming tool is welded to the rotary device.
 16. The hole forming apparatus of claim 7, wherein the rotary device is one of a handheld drill, drill press, or angle grinder.
 17. The hole forming apparatus of claim 7, wherein the cutting edge of the forming tool is sharpened to a point. 